[239] Which, on that occasion, is tranquility of the body (kāyapassaddhi)?
The tranquility, the quiescence, the calming, the quieting, the state of being quieted of the aggregate of feeling (vedanākkhandha), of the aggregate of perception (saññākkhandha), of the aggregate of volitional formations (saṅkhārakkhandha) that there is on that occasion — the tranquility factor of awakening (passaddhisambojjhaṅga) — this, on that occasion, is tranquility of the body.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.